It's based from XG250 https://www.bike-parts-yam.com/yamah...e-8984-30.html which JT =  TBA http://www.jtsprockets.com/catalogue/model/2546
Search 魔术师 & 链轮 in taobao.com will tells what other option available
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Last edited by humanbeing; 04-02-2017 at 05:05 PM.
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